src/test/compile-fail/mutable-enum-indirect.rs

   1 // Copyright 2014 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 // Tests that an `&` pointer to something inherently mutable is itself
  12 // to be considered mutable.
  13
  14 #![feature(optin_builtin_traits)]
  15
  16 use std::marker::Sync;
  17
  18 struct NoSync;
  19 impl !Sync for NoSync {}
  20
  21 enum Foo { A(NoSync) }
  22
  23 fn bar<T: Sync>(_: T) {}
  24
  25 fn main() {
  26     let x = Foo::A(NoSync);
  27     bar(&x); //~ ERROR `NoSync: std::marker::Sync` is not satisfied
  28 }